package com.dongfang.coa;

import android.app.Activity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;

/**
 * 加速计
 * 
 * @author dongfang
 * 
 */
public class AccelerometerTest extends Activity implements SensorEventListener {
	TextView textView;
	StringBuilder builder = new StringBuilder();

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		textView = new TextView(this);
		setContentView(textView);

		SensorManager manager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
		if (manager.getSensorList(Sensor.TYPE_ACCELEROMETER).size() == 0) {
			textView.setText("No accelerometer installed");
		}
		else {
			Sensor accelerometer = manager.getSensorList(Sensor.TYPE_ACCELEROMETER).get(0);
			if (!manager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_GAME)) {
				textView.setText("Couldn't register sensor listener");
			}
		}
	}

	@Override
	public void onAccuracyChanged(Sensor sensor, int accuracy) {}

	@Override
	public void onSensorChanged(SensorEvent event) {
		builder.setLength(0);
		builder.append("x: ");
		builder.append(event.values[0]);
		builder.append("\ny: ");
		builder.append(event.values[1]);
		builder.append("\nz: ");
		builder.append(event.values[2]);
		textView.setText(builder.toString());
	}

}
